Torso, Impact wound / trauma

Fell during Jukola and landed heavily on L side of chest on a tree stump. Winded and disorientated. Sore after but ok. Bruising (probably not broken ribs) but very sore.
Developed into really sore and tight across left side of chest, causing back stiffness in upper thorassic.

Hurts to sneeze.

Problems breathing at high intensity and constant pain during fast running